Year	% of children ages 12-23 months
1980	2.2133583111801767
1981	5.307883288888847
1982	6.009826929266071
1983	5.844994837506132
1984	12.405167338222107
1985	21.48254390200831
1986	31.066929241138304
1987	35.90876255277029
1988	42.500647847446395
1989	51.95336467905163
1990	52.890608656370034
1991	52.74490367968012
1992	44.86959629086883
1993	43.346642589454824
1994	44.587069771788144
1995	48.1424550362383
1996	44.87568085245491
1997	44.890002633749944
1998	43.738179271203464
1999	44.40773461249779
2000	44.60798582419812
2001	44.600712730626874
2002	44.83469348185853
2003	48.64242374252503
2004	51.13609794979023
2005	55.32608931603717
2006	57.494491686804565
2007	56.983678657327005
2008	62.24778542026438
2009	68.41093265880602
2010	65.42878191128439
2011	61.64170836213041
2012	60.47677040753591
2013	59.79865454248878
2014	59.139337501717506
2015	58.797370311684645
2016	61.460611085289536
2017	64.22396413392072
2018	64.7145940946056
2019	65.75176539808956
2020	65.44002820801012
2021	66.64636101551761
2022	65.78037581859702